» Air insulated switchgear with vacuum circuit breaker Compartmentalized design
» Draw-out and fixed type distribution switchgear
» Designed as per IEC 62271-200
» Service continuity and partition category LSC2A / PM as per IEC
» Internal arc design and protection classification - ALFR as per IEC
» Compatible with latest measuring and protection equipment
Technical Parameters
| Rated voltage |
12kV |
|
| Rated current |
630A, 1250A |
|
| Rated frequency |
50 Hz |
|
| Power frequency withstand voltage |
28kV for 1min |
|
| Lightning impulse voltage |
75 kVpeak |
|
| Short time current withstand capacity |
25kA for 3sec |
|
| Degree of protection for enclosure |
IP4X / IP55 |
|
| Design ambient temperature |
40ºC |
|
Enclosures
Switchgear enclosures are of self-supporting type and are made-up of 2mm sheet steel. Load bearing members are of 2.5/3mm sheets. Fabrication of sheet components is done using CNC and NC machines. Fabricated components are powder coated or zinc plated for surface protection. The freestanding functional units are extensible type.
Components
Power components like circuit breaker, voltage transformers, current transformers and busbars are installed in separate compartment providing service continuity class LSC2A as per IEC62271-200. Metallic partitions are provided to segregate compartments. Busbar, circuit breaker and cable termination compartment are designed for internal arc protection.
Protection and Control
LV control and protection apparatus are mounted in separate compartment installed on front side of switchgear panel. OHM Energy switchgears are compatible with modern relays and monitoring equipment.
Quality Assurance
OHM Energy assures quality of all its product and services.
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